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Central Straightflow Dry Pipe Valve
Trial #2, Cement floor before slow start
Central Pipe Bends and Coils, Welded and Van Stoned (Square Corner) Piping
Proposal for Grinnell Fire Protection Equipment
On Guard Everywhere
Proposal from Central Automatic Sprinkler Co. Philadelphia, Pennsylvania for Central Fire Protection Equipment
Green Harvest
Central and Automatic Open Sprinklers
Central Alarm Systems and Devices for Wet Pipe Sprinkler Systems
Trial #5, Wood floor after exposure start
Trial #3, Cement floor after exposure start
Photograph album prologue and fire test floor plan
Trial #5, Wood floor after exposure start
Trial #4, Wood floor after slow start
Trial #3, Cement floor after exposure start
Trial #3, Cement floor after exposure start
Trial #2, Cement floor after slow start
Trial #4, Wood floor after exposure start
Trial #3, Cement floor after exposure start
Trial #2, Cement floor after slow start
Trial #3, Cement floor after exposure start
Trial #3, Cement floor after exposure start
Trial #3, Cement floor after exposure start
Photograph album title page
Trial #3, Cement floor after exposure start

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